ATP is an unstable molecule in unbuffered water, in which it hydrolyses to ADP and phosphate. This is because the strength of the bonds between the phosphate groups in ATP is less than the strength of the hydrogen bonds (hydration bonds), between its products (ADP + phosphate), and water. Thus, if ATP and ADP are in chemical equilibrium in water, almost all of the ATP will eventually be converted to ADP.
attribuer. 1  to grant, to award. 2  to give credit to, to recognize. 3  to attribute to, to ascribe to. ( takes a reflexive pronoun, s'attribuer) to take the credit for, to give oneself priority over others.
2. purport-the pervading meaning or tenor; caught the general drift of the conversation. drift. tenor, strain-the general meaning or substance of an utterance; although I disagreed with him I could follow the tenor of his argument.